Tag Archives: model

Scratchbuild case study: Mantis

The Mantis is a 1:12 scale VTOL aircraft I designed and built for a short film called Last Flight. The film was the final project for a filmmaking course I took several years ago.

mantis-front

Utilizing a sheet aluminum skin over a framework of copper tubing, the Mantis features spring-loaded landing struts and a vertically mounted fan to generate dust on touchdown. To stay within budget, found objects were used wherever possible. The engine bells are lighting shrouds from a camera supply store, and the main engines are hairspray cans. The one area where I spent a bit more money was the landing skids, which are solid milled steel.
mantis-rear-three-quarter

Film models are vastly different from typical display models. They’re designed to fit the requirements of a specific scene, so the emphasis is on function. The main requirements for the Mantis were going with a large enough scale so that the camera would hold depth of field during filming, and making the fuselage big enough to accommodate an electric fan. Filmed with an overcranked 16mm Bolex camera, the fan did a good job of blowing dust (cinnamon from the kitchen cupboard) all over as it touched down on the landing pad, and the scene came out looking fairly realistic.

Given the tight project deadline, I didn’t have time to detail the model. But as special effects guru Brian Johnson once said, “with all that smoke swirling about, you can get away with murder!” I used cinnamon instead of smoke, but close enough.

mantis-top

There was of course a pilot figure seated in the cockpit for the filming of the scene. I upgraded the cockpit later using an Italeri kit so the Mantis would make a respectable display model. As for the design of the ship, I saw it in a dream. I don’t remember what the rest of the dream was about, but I sketched out the basic shape as soon as I woke up, and worked out the details later. The sharply angled nose looks a bit like a Praying Mantis, hence the name.

-Ivar